| |
 |
|
Class Information
Number: 341/143
Name: Coded data generation or conversion > Analog to or from digital conversion > Differential encoder and/or decoder (e.g., delta modulation, differential pulse code modulation)
Description: Subject matter wherein the analog signal which is to be encoded or decoded depends on the difference between a given analog signal and the analog signal previously encoded or decoded.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7205919 |
Digital signal processing apparatus and digital signal processing method |
Apr. 17, 2007 |
| 7205918 |
Hearing aid device with an output amplifier having a sigma-delta modulator |
Apr. 17, 2007 |
| 7205917 |
Pulse width modulator quantisation circuit |
Apr. 17, 2007 |
| 7199739 |
Programmable sample rate analog to digital converter and method for use therewith |
Apr. 3, 2007 |
| 7199738 |
Sigma delta beamformer and method with reduced artifact |
Apr. 3, 2007 |
| 7196650 |
Signal converter systems and methods with enhanced signal-to-noise ratios |
Mar. 27, 2007 |
| 7196647 |
Signal processing with look-ahead modulator noise quantization minimization |
Mar. 27, 2007 |
| 7196643 |
Resolver arrangement |
Mar. 27, 2007 |
| 7194036 |
Digital data processing circuits and systems with delta-sigma modulator filtering |
Mar. 20, 2007 |
| 7193548 |
Switching arrangement and DAC mismatch shaper using the same |
Mar. 20, 2007 |
| 7193547 |
DAC/ADC system |
Mar. 20, 2007 |
| 7193546 |
Phase-measuring delta-sigma modulator calibration method and apparatus |
Mar. 20, 2007 |
| 7193545 |
Differential front-end continuous-time sigma-delta ADC using chopper stabilization |
Mar. 20, 2007 |
| 7193544 |
Parallel, adaptive delta sigma ADC |
Mar. 20, 2007 |
| 7190296 |
Low power, high SNR, high order delta sigma modulator stage having integrators with pipelined cross coupled input circuits |
Mar. 13, 2007 |
| 7190295 |
Accumulator for adaptive sigma-delta modulation |
Mar. 13, 2007 |
| 7190294 |
Jointly nonlinear delta sigma modulators |
Mar. 13, 2007 |
| 7190293 |
Sigma-delta analog-to-digital converter and method for reducing harmonics |
Mar. 13, 2007 |
| 7190291 |
Programmable error amplifier for sensing voltage error in the feedback path of digitially programmable voltage sources |
Mar. 13, 2007 |
| 7190288 |
Look-up table delta-sigma conversion |
Mar. 13, 2007 |
| 7188087 |
Devices, systems and methods for restricting use of digital content |
Mar. 6, 2007 |
| 7187313 |
Fractional-N frequency synthesizer with sigma-delta modulator for variable reference frequencies |
Mar. 6, 2007 |
| 7187312 |
Look-ahead delta sigma modulator having an infinite impulse response filter with multiple look-ahead outputs |
Mar. 6, 2007 |
| 7183957 |
Signal processing system with analog-to-digital converter using delta-sigma modulation having an internal stabilizer loop |
Feb. 27, 2007 |
| 7183956 |
High speed digital delta-sigma modulator with integrated upsampler |
Feb. 27, 2007 |
| 7183955 |
Sigma-delta modulator, D/A conversion system and dynamic element matching method |
Feb. 27, 2007 |
| 7183954 |
Circuits, systems and methods for volume control in low noise 1-bit digital audio systems |
Feb. 27, 2007 |
| 7180432 |
Method and apparatus for complex cascade sigma-delta modulation and single-sideband analog-to-digital conversion |
Feb. 20, 2007 |
| 7176822 |
Analogue-to-digital converter |
Feb. 13, 2007 |
| 7176821 |
Reduced area digital sigma-delta modulator |
Feb. 13, 2007 |
| 7176820 |
Multiple input sigma-delta architecture |
Feb. 13, 2007 |
| 7176819 |
Precision low noise-delta-sigma ADC with AC feed forward and merged coarse and fine results |
Feb. 13, 2007 |
| 7176818 |
Analog to digital converter, related method and use in voltage regulator circuits |
Feb. 13, 2007 |
| 7176817 |
Continuous time delta sigma ADC with dithering |
Feb. 13, 2007 |
| 7173555 |
Method and system for nonlinear and affine signal processing |
Feb. 6, 2007 |
| 7173550 |
Circuits, systems and methods for volume control in low noise 1-bit digital audio systems |
Feb. 6, 2007 |
| 7173485 |
Phase-compensated filter circuit with reduced power consumption |
Feb. 6, 2007 |
| 7170434 |
Look-ahead delta sigma modulator with quantization using natural and pattern loop filter responses |
Jan. 30, 2007 |
| 7167119 |
Delta-sigma modulators with double sampling input networks and systems using the same |
Jan. 23, 2007 |
| 7167118 |
Centered-pulse consecutive edge modulation (CEM) method and apparatus |
Jan. 23, 2007 |
| 7167113 |
Sample rate converter having a zero-phase filter |
Jan. 23, 2007 |
| 7164378 |
Analog-to-digital converter with reduced average input current and reduced average reference current |
Jan. 16, 2007 |
| 7164376 |
Dual-mode delta-sigma analog to digital converter system and method |
Jan. 16, 2007 |
| 7164375 |
Analog to digital converter using both analog and digital offset voltages as feedback |
Jan. 16, 2007 |
| 7161510 |
Switching amplifier comprising a delta-sigma modulation circuit |
Jan. 9, 2007 |
| 7158064 |
Continuous-time delta-sigma ADC with programmable input range |
Jan. 2, 2007 |
| 7158063 |
High-resolution sigma-delta converter |
Jan. 2, 2007 |
| 7158062 |
Clocked DAC current switch |
Jan. 2, 2007 |
| 7152010 |
Calibrating an analog-to-digital converter using a test signal with a precise DC voltage |
Dec. 19, 2006 |
| 7151474 |
Controlled current source; in particular for digital/analogue converters in continuous-time sigma/delta modulators |
Dec. 19, 2006 |
|
|
|
